PRIMECLUSTER Installation and Administration Guide 4.1 (for Solaris(TM) Operating System)

A.5.1 CF Configuration

When the resource database is used

The table below shows the kernel parameter values that are required in the CF configuration when the resource database is used.

The kernel parameter values in /etc/system are automatically changed by the installer. Be sure to return the settings in /etc/system to their original state when you uninstall the package.

For system expansion, if you increase the number of nodes and logical disks, you need to re-estimate the resources and restart each node in the cluster system. If you want to add nodes or logical disks to a cluster system after it is configured, it is necessary to set a kernel parameter in advance considering the number of the nodes and logical disks.

Solaris 8

Kernel parameter	Characteristics	Recommended value/minimum value	Comments (parameter description)
shmsys:shminfo_shmmax	Maximum value	4194304 *	Value required for resource database
shmsys:shminfo_shmseg	Maximum value	30	Value required for resource database
shmsys:shminfo_shmmni	Addition	30	Value required for resource database
semsys:seminfo_semmni	Addition	20	Value required for resource database
semsys:seminfo_semmns	Addition	40	Value required for resource database
semsys:seminfo_semmnu	Addition	40 **	Value required for resource database

*

Change the shmsys:shminfo_shmmax value required by the cluster system to the value shown below.

Estimate the number of cluster system resources according to the following equation:

Number of resources = (a) + (b)

(a) Number of disks in shared system devices x (number of shared nodes + 1) x 2

(b) Total number of local disks (number of local disks in all cluster configuration nodes)

Value required for resource database = 1048576 + 2776 x number of resources

• If the value calculated above is larger than the installation default value of PRIMECLUSTER (4194304):

  shmsys:shminfo_shmmax = Value required for resource database

• If the value calculated above is smaller than the installation default value of PRIMECLUSTER (4194304):

  shmsys:shminfo_shmmax = 4194304

  (The value that is automatically set during PRIMECLUSTER installation will be used.)

**

The installer automatically changes a kernel parameter value. It also sets semsys:seminfo_semmnu, which is the same as semsys:seminfo_semmns calculated by PRIMECLUSTER. Be sure to check and adjust the value according to the system environment.

Solaris 9

Kernel parameter	Characteristics	Recommended value/minimum value	Comments (parameter description)
shmsys:shminfo_shmmax	Maximum value	4194304 *	Value required for resource database
shmsys:shminfo_shmmni	Addition	30	Value required for resource database
semsys:seminfo_semmni	Addition	20	Value required for resource database
semsys:seminfo_semmns	Addition	40	Value required for resource database
semsys:seminfo_semmnu	Addition	40 **	Value required for resource database

*

Change the shmsys:shminfo_shmmax value required by the cluster system to the value shown below.

Estimate the number of cluster system resources according to the following equation:

Number of resources = (a) + (b)

(a) Number of disks in shared system devices x (number of shared nodes + 1) x 2

(b) Total number of local disks (number of local disks in all cluster configuration nodes)

Value required for resource database = 1048576 + 2776 x number of resources

• If the value calculated above is larger than the installation default value of Solaris 9 (8388608):

  shmsys:shminfo_shmmax = Value required for resource database

• If the value calculated above is smaller than the installation default value of Solaris 9 (8388608):

  You do not need edit shmsys:shminfo_shmmax .

  (The installation default value of Solaris 9 is used.)

**

The installer automatically changes a kernel parameter value. It also sets semsys:seminfo_semmnu, which is the same as semsys:seminfo_semmns calculated by PRIMECLUSTER. Be sure to check and adjust the value according to the system environment.

Solaris 10

Kernel parameter	Characteristics	Recommended value/minimum value	Comments (parameter description)
shmsys:shminfo_shmmax	Maximum value	4194304 *	Value required for resource database
shmsys:shminfo_shmmni	Addition	30	Value required for resource database
semsys:seminfo_semmni	Addition	20	Value required for resource database

*

Change the shmsys:shminfo_shmmax value required by the cluster system to the value shown below.

Estimate the number of cluster system resources according to the following equation:

Number of resources = (a) + (b)

(a) Number of disks in shared system devices x (number of shared nodes + 1) x 2

(b) Total number of local disks (number of local disks in all cluster configuration nodes)

Value required for resource database = 1048576 + 2776 x number of resources

• If the value calculated above is larger than the installation default value of Solaris 10 (8388608):

  shmsys:shminfo_shmmax = Value required for resource database

• If the value calculated above is smaller than the installation default value of Solaris 10 (8388608):

  You do not need edit shmsys:shminfo_shmmax .

  (The installation default value of Solaris 10 is used.)

RCI monitoring agent setup

When you set up RCI asynchronous monitoring, you must also tune the following parameters depending on the machine type of the node in the cluster system.

• Monitoring timeout interval to be performed routing via SCF/RCI

For details on the setup method and values to be set, contact your Fujitsu systems engineer (SE).